Body weight and Internet access: evidence from the rollout of broadband providers

Michael DiNardi, Melanie Guldi and David Simon ()
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David Simon: University of Connecticut and NBER

Journal of Population Economics, 2019, vol. 32, issue 3, No 5, 877-913

Abstract: Abstract Obesity has become an increasingly important public health issue in the USA and many other countries. Hypothesized causes for this increase include declining relative cost of food and a decreasing share of the population working in labor-intensive occupations. In this paper, we suggest another factor: the Internet. Increasing Internet access could affect body weight through several channels. First, more time spent using the Internet, a sedentary activity, could lead to increases in body weight. Second, the prior literature has shown that economic activity (and income) increase with Internet access: given a positive health-income gradient, obesity rates could likewise increase, although the empirical evidence on the income-obesity gradient is mixed. Third, the Internet increases information and creates the possibility for online peer networks. Theoretically, increases in information should lead to more optimal consumer choices. At the same time, greater networking opportunities may result in peers having greater influence over positive or negative health behaviors. While we are unable to fully test these mechanisms, we are able to use the rollout of broadband Internet providers as a plausibly exogenous source of variation in Internet access to identify the reduced form effect of Internet use on body weight. We show that greater broadband coverage increases the body weight of white women and has both positive and negative effects on modifiable adult health behaviors including exercise, smoking, and drinking.

Keywords: Obesity; Exercise; Health; Information (search for similar items in EconPapers)
JEL-codes: D8 I12 I18 (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (20)

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DOI: 10.1007/s00148-018-0709-9

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